TY - JOUR
T1 - A natural scotogenic model for neutrino mass & dark matter
AU - Ahriche, Amine
AU - Jueid, Adil
AU - Nasri, Salah
N1 - Funding Information:
The authors would like to thank L. Lavoura for his valuable remarks. The work of A. Jueid is supported by the National Research Foundation of Korea , Grant No. NRF-2019R1A2C1009419 . The work of S. Nasri is supported by the United Arab Emirates University (UAEU) research fund, UPAR Grant No. 31S434 .
Publisher Copyright:
© 2021 The Author(s)
PY - 2021/3/10
Y1 - 2021/3/10
N2 - In this letter, we propose an extension of the scotogenic model where singlet Majorana particle can be dark matter (DM) without the need of a highly suppressed scalar coupling of the order O(10−10). For that, the SM is extended with three singlet Majorana fermions, an inert scalar doublet, and two (a complex and a real) singlet scalars, with a global Z4 symmetry that is spontaneously broken into Z2 at a scale higher than the electroweak one by the vev of the complex singlet scalar. In this setup, the smallness of neutrino mass is achieved via the cancellation between three diagrams a la scotogenic, a DM candidate that is viable for a large mass range; and the phenomenology is richer than the minimal scotogenic model.
AB - In this letter, we propose an extension of the scotogenic model where singlet Majorana particle can be dark matter (DM) without the need of a highly suppressed scalar coupling of the order O(10−10). For that, the SM is extended with three singlet Majorana fermions, an inert scalar doublet, and two (a complex and a real) singlet scalars, with a global Z4 symmetry that is spontaneously broken into Z2 at a scale higher than the electroweak one by the vev of the complex singlet scalar. In this setup, the smallness of neutrino mass is achieved via the cancellation between three diagrams a la scotogenic, a DM candidate that is viable for a large mass range; and the phenomenology is richer than the minimal scotogenic model.
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U2 - 10.1016/j.physletb.2021.136077
DO - 10.1016/j.physletb.2021.136077
M3 - Article
AN - SCOPUS:85099764866
SN - 0370-2693
VL - 814
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 136077
ER -